Terry TV III

Does anyone use a TV III? I had V & H short shots put on, with a Terry TV III unit, and a screamin eagle air filter. I have a lot of popping, and my ck engine light comes on for about 15 to 20 seconds after the bike is started. Should I be worried? Is this common, and what should I check or be looking for? Any advice would be helpful, thanks.
* Just checked my plugs. There are pretty white. I believe that means I'm running lean. Any suggestions?